DIAMOND BAR, CA — The Grand Avenue Bridge in Diamond Bar will close overnight Thursday as construction crews continue work on the State Route 57/60 Confluence Chokepoint Relief Project, according to the city.
The closure is scheduled to begin at 8 p.m. Thursday, Nov. 12, and continue until 6 a.m. Friday, Nov. 13.
The overnight work will affect Grand Avenue between Golden Springs Drive and Grand Crossings Parkway, as well as several State Route 60 ramps serving Grand Avenue.
The following closures are scheduled from 8 p.m. Thursday through 6 a.m. Friday:
Beginning Friday, Nov. 13, the northbound Grand Avenue on-ramp to westbound State Route 60 will reopen to motorists as construction crews begin work on the other half of the Grand Avenue Bridge.
The southbound Grand Avenue on-ramp to westbound State Route 60 will remain closed until construction is completed.
The work is part of the SR-57/60 Confluence Chokepoint Relief Project, which involves improvements to the highway interchange connecting the two freeways.
Motorists traveling through the area should plan for overnight closures and allow additional time for their commutes. Drivers are encouraged to use alternate routes and follow posted detour signs.
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